Sigmund bergmann



(No Model.)

v s. BERGMANN. CEILING BLOGK FOR INGANDESGENT LIGHTS.

.361. Patented Oct. 8, 1889.

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UNITED STATES PATENT Fries.

sIeMUND BERGMANN, on NEW 'ronx, NIY.

CEILING-BLOCK FOR INCANDESCENT LIGHTS.

SPECIFICATION forming part of Letters'Patent No. 412,361, dated October 8, 1889.

Application filed JuneZ, 1888.

T0 (0Z6 whom it may concern;

Be it known that I, SIGMUND BERGMANN, of New York, in the county and State of New York, have invented a certain new and useful Improvement in Electric Out-Outs, of which the following is a specification.

My improvement relates to electric cut outs usually employed with what are termed pendent lamps.

I will describe a cut-out embodying my improvement in detail, and then point out the novel features in the claim.

In the accompanying drawings, Figure 1 is a side elevation of a cut-out embodying my improvement, showing the same secured toa ceiling. Fig. 2 is a bottom View of the same. Fig. 3 is an interior plan view of a portion of the cut-out. Fig. 4 is a transverse section thereof, taken on the plane of the line a: at, Fig. 2. Fig. 5 is a plan view of one side of a cover comprised in the cut-out. Fig. 6 is an enlarged detail showing the integral circuitcloser and retaining device.

Similar letters of reference designate corresponding parts in all the figures.

A designates the base-piece of the cut-out. This basepiece is, as shown, circular in form and provided cent-rally with a depression or recess a. The back of the base-piece is solid and flat. There is therefore no opening from the recess a through the back of the basepiece. Moisture, therefore, cannot enter the recess from the back. The base-piece is made of noncombustible material. I hold porcelain to be an excellent material from which to make it. 'When made of this material, it may be formed in a mold. Upon its exterior it is provided with lugs a through which extend screw-holes a through which screws may be passed to secure it to a ceiling or other suitable support.

Upon the exterior of the base-piece are binding-posts a. These binding-posts are made of fiat metal bent into suitable shape, and secured to the base-piece byscrews passin g through suitable holes in the sides of the base-piece. Combined with the bindingposts are bindingscrews of for securing the linewires. The screws by which the binding-posts are secured to the base-piece en gage metallic plates a at their inner ends. Glamped be- Serial No. 275,831- (No model.)

tween these metallic plates (1, and the inner surface'ot the base-piece are metal pieces at. These metal pieces in the example of my improvement shown constitute combined contact-pieces and retaining devices for a cover B for the cut-o ft. The portions of the metal pieces a which constitutecircuiteclosers are in the form of flat strips (47, curved so as to extend away from the walls of the recess a. They exupon opposite sides of the recess; Near their ends they are provided with depressed or indented portions constituting notches a The strips a are resilient.

The portions of the metal pieces of which constitute retaining devices for the cover consist of tongues o formed to extend at approximate right-angles to the strips of and outwardly adjacent to the wall of the recess ct. Their extremities are bent to form hooks a Upon the wall of the recess ais formed a circumferentially-extending ledge. This ledge constitutes a stop a to prevent a too-extended inward movement of the cover B. The cover Bis adapted to be passed into the recess at until it contacts with the stop-ledge o It will be seen that the wall of the recess a is indented, as at a and that the tongues a are bent so as to extend into such indentations in order that they may be flush with the wall of the recess outward of the stop a.

The cover B coniprises a flat circular portion I) and a central projection 11. The pewith notches Z2 When the cover is to be secured to the base-piece, it is so placed that the notches b are opposite the hooks a The cover is then moved inwardly past the hooks, the notches b admitting of this. It, then, the

will be brought over the surface of the cover and thus operate to retain the cover in place. Through the projection 11' extends a central aperture 11 The cover is likewise made of non-combustible material, preferably porcelain. Upon the back of the cover is a binding-post 19 From this binding-post extends a metallic contact-piece This contact-piece is shown as approximately straight, and extending approximately parallel with the axis of the cover. Another bindingpost b is also tend in reverse directions to en ch other and riphery of the circular portion 1) is provided cover be turned sufficiently far, the hooks a secured to-t-hebacks of the cover. From this binding-post extendsa contact-piece b similar to the one just described.

0 designates a binding-plate secured upon the back of the cover. This plate is provided with two binding-screws 1)" b A Wire 11 extends from the binding-post b to the bindingplate 0. Secured to the binding-plate O by the binding-screw b is a circuit-wire 01, leading to a lamp. (Not shown.) Secured to the binding-post b is a circuit-wire d, also leading to the lamp. These wires extend through the aperture b in the projection 19. As a convenient means for preventing strain upon the wires at the binding-posts, I tie a knot d in the wires cl d, which knot is within a recess or depression b in the cover. When the cover is placed on the base and turned around, as previously explained, the contact-pieces I) come in contact with the resilient circuitclosers a and the continued rotation of the covercauses the contact-pieces b to spring into the retaining-notches a of the circuitclo'sers. The extreme end portions of the circuit-closers a are bent at right angles to the direction of the length of the circuit-closers and constitute stops to preventatoo-extended movement of the contact-pieces.

I Wish to observe that by providing binding-posts upon the exterior of the base-piece it is not necessary to remove the cover of the cut-out inprder to attach the line-wires. cover need only be removed for the purpose of attaching the circuit-wires for the lamp.

What I claim as my invention, and desire to secure by Letters Patent, is-

In an electric cutout, the combination, with a base-piece havinga central recess and binding-posts and a cover adapted to close said recess, of contact-closers comprising resilient strips having connection With the bindingposts and having their ends extended away from the wall of the recess and provided with notches, retaining portions for the cover integral with the circuit-closers extending outwardly adjacent to the wall of the recess at approximate right angles to the circuit-closers, and having hook ends adapted to extend over the outer surface of the cover, substantially as specified.

SIGMU ND BERGMANN;

\Vitnesses:

P. H. KLEIN, J r., E. WV. LITTLE.

The 

